Geothermal Heat Pump

The word geothermal comes from the Greek word "geo" which means "earth "and "therme" which means "heat" therefore combined together to men heat produced within the earth.It is a renewable source of energy as it constantly replenished by rainfall and the heat.

Geothermal Heating

Geothermal as the name suggests uses Earth’s potential to preserve heat under the surface level and water bodies. The system of Geothermal heating would use the landmass as a heat exchanger to both heat and cool a building. It has been from earlier times as a method of heating the ancient structures, which included spas. At times the hot water stream and the hot geysers are also source of geothermal energy. Geothermal heating is only possible where the resources are available. Now there has been up gradations in technology and the science of Geothermal heating is utilized in heating and cooling but now it is done with the help of Geothermal Heat Pump
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Geothermal Heat Pump

A Geothermal Heat Pump system works on simple principle that the surface of land below the frost line remains at a constant temperature the year round and a water source uses that heat in the winter and puts back the same amount heat back in the ground during the summers. The geothermal Heat Pump does not produce heat in a convention way and it can also transfer heat. The use of energy resources and simultaneously the cost continue to rise steeply on the graph, apart from the concern about pollution in the globe, geothermal systems actually pose as a solution all these challenges. The greatest advantage of it is that these heat pumps can actually use renewable resources of energy, like solar and wind energy, rather electricity used by these resources. By using these sources of energy the pump can heat and cool the spaces and water much more efficiently than an electric heater. This facilitates the heating of spaces to be done with the help of renewable energy without taking the trouble of installing heavy integrations.

The geothermal pump can basically be disintegrated into three primary components, which are:

• A loop field
• A liquid Pump Pack
• Water source heat pump.

The first component, that is the loop field can be placed on the property. The purpose of a loop field is to transfer heat to the ground and vice versa. The size of the building determines the size of the loop. The liquid Pump pack sends s the water through the loop field and the water source heat pump. The function of the last component, that is the water source heat pump is the unit that functions like a boiler or a furnace and therefore substitutes it. This end receives the heat from the loop field and is utilized to heat the given structure. As is stated earlier that a heat pump has the ability to transfer heat from one heat reservoir to the other. The purposes of heat pumps differ so do the types of heat pumps. Some are used for residential purposes while others are used for commercial purpose like an industry or the like. The three types of heat pump that are available are one who get the heat from water and transfer the heat to air. These can be used like an air conditioner, that is, these heat pumps give warm the atmosphere during winters and function to cool it during summers. The other types are water- to -water and Hybrid. The new up gradation in case of Geothermal heat Pumps is now reversible heat pumps are also available that can be used for chillers.

Geothermal Cooling

Geothermal Cooling is done in a very similar way except that the refrigerant loop reverses the direction of flow. So the compressed refrigerant heats the fluid that is external before it passes through the evaporator where it evaporates by absorbing all the heat in the house. The hot external fluid is regenerated to function in the same way. It is thrust towards the ground where it cools and is ready to be recirculated. To get rid of the excess heat the hot fluid can pass through another heat exchanger wherein the excess heat can be absorbed.